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In a message dated 4/14/01 9:55:22 AM Eastern Daylight Time, rikard.lundgren@sw*.se* writes: > >As for the 3/4 of European divers using this method, divers taking there > first steps into tech training , do so with IANTD or TDI, > >, as shut downs are apart of syllabus, my instructor & people i have > listened to use this method, and as far as i a aware As the said > organisations are wide spread >around Europe , i can only conclude that they > are also shown this method. > I suspect this is more a matter of the individual instructor than what's actually in the standards. I've read both of these agency's standards at one time or another and do not recall a single line about requiring paritially open ISOs. Common sense dictates that all valves need to be either all the way on or all the way off. In a stressful situation requiring a valve shut-down it would be way too easy to turn the valve the wrong way if it's only partly open. With a strict on/off approach, the valve is only going to turn one way...... THE RIGHT ONE! Bare handed, gloves or mitts, shutting down a valve is not a difficult matter with a little practice. Bob D. www.SportDiverHQ.com -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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